أنت المهندس .. الآلات التي نستخدمها كل يوم وكيف تؤدى عملها

You are the engineer .. The machines we use every day

And how they do their work

Who is responsible for maintaining a greater number of machines. Is it you or the mechanic? It is you! Because you use dozens of machines every day in your home. Although these machines may not be comparable to a hundred-ton ship, they are in fact machines just like them - machines that took many years to invent, design, and improve.

When you turn a key in a lock, you are operating a machine that was gradually invented, and thousands of skilled and brilliant people arrived at the invention of each of its parts. When you turn a faucet, use a sharpener, play the piano, or weigh yourself on a scale, you are using machines that did not create themselves, but rather came as a result of many experiments that took many years, and exhausted a lot of the patience of inventors, designers, and engineers.

Your home is full of machines and devices that make work easier and fun, and this book will teach you how most of these machines do their job.